3 listing(s) in HVAC Builder's catalog from ACT (Advanced Cooling Technologies)'s published data, selectable in the builder and solved with the catalog's own figures. This page is listed by HVAC Builder from published data; ACT (Advanced Cooling Technologies) has not claimed it.
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Showing 1–3 of 3
Heat-pipe wrap, 1473 × 1100 mm face, 4 rows at 12.0 fpi.
Heat-pipe wrap, 1473 × 1100 mm face, 6 rows at 12.0 fpi.
Heat-pipe wrap, 1473 × 1100 mm face, 8 rows at 12.0 fpi.
| Fin-and-tube coil model (Elmahdy & Biggs air side, Gnielinski/Dittus-Boelter bracket water side, computed fin efficiency, contact resistance) | 36 | total capacity RMS 1.21 %, worst 2.0 %; sensible RMS 0.98 %; leaving RH within 0.5 points on average (re-read 27 Aug on the corrected saturation line, calibration 0.81) |
| Dry-coil Colburn j-factor and whole-coil UA | 38 + 1 | j +13.3 % mean against 38 measured points (inside the 3–18 % contact resistance the thesis folds into its own j); UA 0.6380 against a measured 0.6327 kW/K — 0.8 % (0.14 % at the pre-27-Aug calibration) |
| Heat-pipe recovery effectiveness | 3 sizes | within 1 point of ACT's selection |
| Heat-pump frost/defrost derate | 43, from five makers | RMS 0.023, where the makers stand 0.029 from each other at the forty temperatures they share — the one generic curve is closer to each of them than they are to one another, and none is served much worse than any other (0.019–0.028 apiece). The EnergyPlus model this replaced had the shape inverted (deepest just below its 5 °C cutoff, then a 29-point step across it) and read up to 0.15 low |
| What a run of refrigerant pipe costs a machine's capacity | 23 lengths from one maker's table, plus three makers' figures at one common point | the model carries LG's table rather than fitting it, so it reproduces all 23 points: 0.91 at 100 m, 0.82 at 225. At the one point a second maker can be compared — sixty metres with forty of lift — the three lines read 0.898 (Midea V6, Trane), 0.927 (Midea V8S) and 0.94 (LG), and the model sits at LG's end of that band on purpose, because LG publish 575 cells with their conventions stated where the others are single points off a chart. The height turned out not to be worth a field: across LG's whole grid a hundred metres of level difference moves the factor by one point |
| Moist-air saturation line (IAPWS-IF97 water line with Buck's 1981 enhancement factor) | 6 | within 0.1 % at every point — a flat 1.015 factor had put the line about 1 % high until 27 Aug |
| A heat-reclaim stage ahead of the condenser, and the head-pressure floor on it | one circuit, three demands, one floor | closes within 5 % of the rejection at the free temperature and at the floor; the capped share within 2 % of the demand; the floor held to 1e-6 |
From the validation page; every row is held by a test.
Listed from published data with the source named on every entry; a listing's figures are the manufacturer's, the model that runs them is ours. Solver results never depend on who has claimed what.